Velleman-Kit EDU08 Manuale utente
EDUCATIONAL LCD
OSCILLOSCOPE
www.vellemanprojects.eu
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fr Kit d'oscilloscope éducatif - afficheur lcd
nl educatieve lcd-oscilloscoopKit
de oszillosKop-lernpaKet - lcd-display
es Kit educativo con oscilloscopio - pantalla lcd
eDu08
Velleman N.V.
Legen Heirweg 33
9890 Gavere
(België)
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Build your own oscilloscope and learn how to visualize signals. See the signals you learn about in real life!
Despite the low cost, this oscilloscope has a lot of features found only on expensive units like signal markers,
frequency, dB, true RMS readouts,... A powerful auto-setup function will get you going in a snap!
Note: This scope cannot be used to perform measurements on voltages higher than 30Vpp.
Maximum input voltage: 30Vpeak
(AC + DC).
Maximum sample rate: 1MS/s for repetitive
signals. Measurements can be performed
up to 100kHz.
Timebase range: in 15 steps,
10µs/division to 500ms/division.
Dimensions:
80 x 115 x 40mm / 3.14 x 4.52 x 1.57”
Full auto set up for: Volt/div and time/div
(or manual).
Input sensitivity range: in 6 steps,
100mV/division to 5V/division.
Educational
Input coupling: DC and AC.
LED backlight LCD.
Time and voltage markers readout.
Readouts: DC, AC+DC, true RMS, dBm,
Vpp, min. & max.
Battery operated: 4 x AAA batteries
(max. 100mA).
assembly
hints
1. Assembly (Skipping this can lead to troubles ! )
Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully.
1.1 Make sure you have the right tools:
• A good quality soldering iron (25-40W) with a small tip.
• Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and
will protect the tip, and enables you to make good connections. When solder rolls off the tip, it needs cleaning.
• Thin raisin-core solder. Do not use any ux or grease.
• A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads, hold the lead so they cannot
y towards the eyes.
• Needle nose pliers, for bending leads, or to hold components in place.
• Small blade and Phillips screwdrivers. A basic range is ne.
)For some projects, a basic multi-meter is required, or might be handy.
1.2 Assembly Hints :
• Make sure the skill level matches your experience, to avoid disappointments.
• Follow the instructions carefully. Read and understand the entire step before you perform each operation.
• Perform the assembly in the correct order as stated in this manual.
• Position all parts on the PCB (Printed Circuit Board) as shown on the drawings.
• Values on the circuit diagram are subject to changes, the values in this assembly guide are correct*.
• Use the check-boxes to mark your progress.
• Please read the included information on safety and customer service.
* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as ‘NOTE’ on a separate leaet.
1.3 Soldering Hints :
1. Mount the component against the PCB surface and carefully solder the leads.
2. Make sure the solder joints are cone-shaped and shiny.
3. Trim excess leads as close as possible to the solder joint.
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- 6 -
DO NOT BLINDLY FOLLOW THE ORDER OF THE
COMPONENTS ON THE TAPE. ALWAYS CHECK THEIR
VALUE WITH THE PARTS LIST!
- 7 -
Construction
* metallm resistor !
This educational LCD oscilloscope consists of three parts: the base PCB, the display PCB and the rear panel. First
we assemble the display pcb and then the base PCB. On the display module we mount components on both sides.
We start at the solderside and nish with the components on the component side.
R1 : 220Ω (2 - 2 - 1 - B)
R2 : 560Ω (5 - 6 - 1 - B)
R3 : 1KΩ (1 - 0 - 2 - B)
R4 : 1K1 (1 - 1 - 0 - 1 - 1)*
R5 : 2K4 (2 - 4 - 0 - 1 - 1)*
R6 : 10KΩ (1 - 0 - 3 - B)
1 Vertical resistors
Display PCB
R...
Solderside
2 Ceramic Capacitors
C1 : 1µF (105)
C2 : 1µF (105)
C3 : 1µF (105)
C4 : 1µF (105)
C5 : 1µF (105)
C6 : 1µF (105)
C7 : 1µF (105)
C8 : 1µF (105)
C9 : 1µF (105)
C10 : 1µF (105)
3 Female header
SK1 : 18pins
1 Push buttons
SW1
SW2
SW3
SW4
SW5
SW6
2 LCD
Component
Side
Be careful when soldering the LCD
connections. Overheating will damage
the LCD screen.
!
A. CONSTRUCTION
Bend the ceramic
capacitors
- 8 -
Construction
Base PCB
D1 : BAT85
D2 : BAT85
D3 : BAT85
D4 : BAT85
D5 : BAT85
D6 : BAT85
D7 : BAT85
D8 : BAT85
Watch the polarity!
1 Diodes 4 IC-socket
5 Switch
6 Coil
2 Zenerdiode
3 Ceramic Capacitors
ZD...
ZD...
ZD...
ZD1 : 5V1
Watch the polarity!
C11 : 100nF (104)
C12 : 100nF (104)
C13 : 100nF (104)
C14 : 100nF (104)
C15 : 100nF (104)
C16 : 100nF (104)
c
...
Watch the position of the notch!
IC1 : 16p
IC2 : 8p
IC3 : 28p
SW1 : on/off
L . . .
L1 : 100µH (1 - 0 - 1 - B)
L . . .
L . . .
c
...
RV1 : 5K (Gain)
RV2 : 5K (Offset)
7 Trimmer
8 Ceramic Capacitors
C1 : 2,2pF (2.2)
C2 : 6,8pF (6.8)
C3 : 10pF (10)
C4 : 15pF (15)
C5 : 47pF (47)
C6 : 100pF (101)
C7 : 470pF (471)
C10 : 680pF (681)
C17 : 1µF (105)
C18 : 1µF (105)
C19 : 1µF (105)
C20 : 1µF (105)
C21 : 1µF (105)
C...
- 9 -
Construction
R1 : 2,2Ω (2 - 2 - B - B)
R2 : 2,2Ω (2 - 2 - B - B)
R3 : 22Ω (2 - 2 - 0 - B)
R4 : 100Ω (1 - 0 - 1 - B)
R5 : 100Ω (1 - 0 - 1 - B)
R6 : 680Ω (6 - 8 - 1 - B)
R7 : 680Ω (6 - 8 - 1 - B)
R8 : 680Ω (6 - 8 - 1 - B)
R9 : 1KΩ (1 - 0 - 2 - B)
R10 : 1KΩ (1 - 0 - 2 - B)
R11 : 1KΩ (1 - 0 - 2 - B)
R12 : 1KΩ (1 - 0 - 2 - B)
R13 : 1K1 (1 - 1 - 0 - 1 - 1)*
R14 : 1K5 (1 - 5 - 2 - B)
R15 : 1K5 (1 - 5 - 2 - B)
R16 : 2K2 (2 - 2 - 2 - B)
R17 : 2K7 (2 - 7 - 2 - B)
R18 : 5K1 (5 - 1 - 0 - 1 - 1)*
R19 : 7K5 (7 - 5 - 0 - 1 - 1)*
R20 : 10KΩ (1 - 0 - 3 - B)
R21 : 10KΩ (1 - 0 - 3 - B)
R22 : 10KΩ (1 - 0 - 3 - B)
R23 : 10KΩ (1 - 0 - 3 - B)
R24 : 11K (1 - 1 - 0 - 2 - 1)*
R25 : 15K (1 - 5 - 3 - B)
R26 : 18K (1 - 8 - 3 - B)
R27 : 20K (2 - 0 - 0 - 2 - 1)*
R28 : 22KΩ (2 - 2 - 3 - B)
R29 : 75K (7 - 5 - 0 - 2 - 1)*
Watch the polarity!
C22 : 10µF
C23 : 10µF
C24 : 10µF
C25 : 100µF
C26 : 100µF
C27 : 100µF
* metallm resistor !
9 Vertical resistors
R...
11 Transistors
VR...VR...
T1 : BC337
T2 : BC337
T3 : BC337
T4: BC327 !!!
12 Voltage regulator
13 Relay
VR1 : LM317LZ
RL1
14 Electrolytic capacitors
15 Male header
16 IC’s
SK7 : 18pins
Watch the position of
the notch!
IC3 :VKEDU08
(programmed PIC18F26J11)
IC2 : TLV272
IC1 : 74HCT4052
10 PCB tab
SK8 : TEST
- 10 -
Construction
STEP 2: Thin the wires.
Step 4: Solder the cables on the PCB.
STEP 1: Strip both cables and twist the wire
ends of each cable.
STEP 3: Mount both cables as shown in the
drawing.
+
-
17 Mounting the test leads
Tip: Start with one cable and then do
the other.
18 Mounting the battery holder
STEP 1: Stick one part of the included hook-and-loop strap (hooks)
on one of the long sides of the battery holder.
STEP 2: Connect the battery holder to the base
PCB using the included red and black mounting
wires. Mind the polarity!
• Red = +
• Black = -
Indice
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